Home / 28,455.16-39,267.09-15,708.07

Finding the Fourth Proportional to 28,455.16, 39,267.09 and 15,708.07

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Solution

The fourth proportional to 28,455.16, 39,267.09 and 15,708.07 is: 21,676.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.16 : 39,267.09 = 15,708.07 : x
  2. Step 2: Convert to fraction form
    28,455.16/39,267.09 = 15,708.07/x
  3. Step 3: Cross multiply
    28,455.16x = 39,267.09 × 15,708.07
  4. Step 4: Simplify right side
    28,455.16x = 616,810,090.43
  5. Step 5: Solve for x
    x = 616,810,090.43/28,455.16
  6. Step 6: Final answer
    x = 21,676.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.